Insulated flexible ductwork is easy to work with and prevents condensation problems when duct is run through unfinished spaces (attics, crawls, etc). The insulated jacket also provides sound-dampening benefits to reduce fan/blower noise.

The product appears to have quality material but is very flexible and kinks if you run it with any 90 degree turns. It comes in a 6"x24" box and jumps out out like a giant black slinky when you open it. If you're using it for a straight run, it's probably a good choice. Turns require a wide area to accomplish.

The product appears to have quality material but is very flexible and kinks if you run it with any 90 degree turns. It comes in a 6"x24" box and jumps out out like a giant black slinky when you open it. If you're using it for a straight run, it's probably a good choice. Turns require a wide area to accomplish.

Insulated flexible ductwork is easy to work with and prevents condensation problems when duct is run through unfinished spaces (attics, crawls, etc). The insulated jacket also provides sound-dampening benefits to reduce fan/blower noise.